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CCDB → Angiosperms → Hydrocharitaceae → Hydrocharis
| Taxon name | Status | Median (n) |
| Hydrocharis dubia (Blume) Backer | Accepted | 8 |
| Hydrocharis morsus-ranae L. | Accepted | 14 |
| Hydrocharis asiatica Miq. | Synonym of Hydrocharis dubia (Blume) Backer | 8 |
| Hydrocharis morsus-ranae None | Synonym of Hydrocharis morsus-ranae L. | 14 |